diff --git a/src/knx/bits.h b/src/knx/bits.h
index 565d24c..61d0d45 100644
--- a/src/knx/bits.h
+++ b/src/knx/bits.h
@@ -39,7 +39,7 @@ void attachInterrupt(uint32_t pin, voidFuncPtr callback, uint32_t mode);
 
 #define getbyte(x,n) (*(((uint8_t*)&(x))+n))
 #define htons(x)  ( (getbyte(x,0)<<8) | getbyte(x,1) ) 
-#define htonl(x) ( (getbyte(x,0)<<24) | getbyte(x,1)<<16) | (getbyte(x,2)<<8) | getbyte(x,3) )
+#define htonl(x) ( (getbyte(x,0)<<24) | (getbyte(x,1)<<16) | (getbyte(x,2)<<8) | getbyte(x,3) )
 #define ntohs(x) htons(x)
 #define ntohl(x) htonl(x)
 
diff --git a/src/knx/config.h b/src/knx/config.h
index 2554c3b..59ee9c4 100644
--- a/src/knx/config.h
+++ b/src/knx/config.h
@@ -1,5 +1,7 @@
 #pragma once
 
+#ifndef NO_KNX_CONFIG
+
 #ifdef ARDUINO_ARCH_SAMD
 #define SPI_SS_PIN 10
 #define GPIO_GDO2_PIN 9
@@ -19,3 +21,5 @@
 #ifdef USE_USB
 #define USE_CEMI_SERVER
 #endif
+
+#endif
diff --git a/src/knx_facade.h b/src/knx_facade.h
index 44afb4a..548f36e 100644
--- a/src/knx_facade.h
+++ b/src/knx_facade.h
@@ -198,12 +198,12 @@ template <class P, class B> class KnxFacade : private SaveRestore
         _bau.deviceObject().bauNumber(value);
     }
 
-    void orderNumber(const char* value)
+    void orderNumber(const uint8_t* value)
     {
         _bau.deviceObject().orderNumber(value);
     }
 
-    void hardwareType(uint8_t* value)
+    void hardwareType(const uint8_t* value)
     {
         _bau.deviceObject().hardwareType(value);
     }
diff --git a/src/stm32_platform.cpp b/src/stm32_platform.cpp
index 4d2d92c..e05ab34 100644
--- a/src/stm32_platform.cpp
+++ b/src/stm32_platform.cpp
@@ -1,20 +1,20 @@
 #include "stm32_platform.h"
 
 #ifdef ARDUINO_ARCH_STM32
-#include <EEPROM.h>
+#include <stm32_eeprom.h>
 #include "knx/bits.h"
 
-Stm32Platform::Stm32Platform() : ArduinoPlatform(&Serial2), eepromPtr(nullptr), eepromSize(0)
+Stm32Platform::Stm32Platform() : ArduinoPlatform(&Serial2)
 {
 }
 
-Stm32Platform::Stm32Platform( HardwareSerial* s) : ArduinoPlatform(s), eepromPtr(nullptr), eepromSize(0)
+Stm32Platform::Stm32Platform( HardwareSerial* s) : ArduinoPlatform(s)
 {
 }
 
 Stm32Platform::~Stm32Platform()
 {
-	delete [] eepromPtr;
+    delete [] _eepromPtr;
 }
 
 void Stm32Platform::restart()
@@ -24,19 +24,26 @@ void Stm32Platform::restart()
 
 uint8_t * Stm32Platform::getEepromBuffer(uint16_t size)
 {
-	delete [] eepromPtr;	
-	eepromPtr = new uint8_t[size];
-	for (uint16_t i = 0; i < size; ++i)
-		eepromPtr[i] = EEPROM[i];
-	return eepromPtr;
+    if (size > E2END + 1)
+    {
+        fatalError();
+    }
+    _eepromSize = size;
+    delete [] _eepromPtr;
+    _eepromPtr = new uint8_t[size];
+    eeprom_buffer_fill();
+    for (uint16_t i = 0; i < size; ++i)
+        _eepromPtr[i] = eeprom_buffered_read_byte(i);
+    return _eepromPtr;
 }
 
 void Stm32Platform::commitToEeprom()
 {
-	if(eepromPtr == nullptr)
-		return;
-	for (uint16_t i = 0; i < eepromSize; ++i)
-		EEPROM.update(i, eepromPtr[i]);
+    if(_eepromPtr == nullptr || _eepromSize == 0)
+        return;
+    for (uint16_t i = 0; i < _eepromSize; ++i)
+        eeprom_buffered_write_byte(i, _eepromPtr[i]);
+    eeprom_buffer_flush();
 }
 
 #endif
diff --git a/src/stm32_platform.h b/src/stm32_platform.h
index d8c6faa..04870ec 100644
--- a/src/stm32_platform.h
+++ b/src/stm32_platform.h
@@ -15,8 +15,8 @@ public:
     uint8_t* getEepromBuffer(uint16_t size);
     void commitToEeprom();
 private:
-	uint8_t *eepromPtr;
-	uint16_t eepromSize;
+    uint8_t *_eepromPtr = nullptr;
+    uint16_t _eepromSize = 0;
 };
 
 #endif